34 lines
2.0 KiB
Bash
34 lines
2.0 KiB
Bash
D=/root/links
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current_ok() {
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[ -L $D/releases/current ] && [ "$(readlink -f $D/releases/current)" = "$(readlink -f $D/releases/1.1)" ] && [ -d $D/releases/1.1 ]
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}
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chain_ok() {
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local first last
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first=$(grep -m1 . /root/lab-answers/5 2>/dev/null | awk '{print $NF}')
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last=$(grep . /root/lab-answers/5 2>/dev/null | tail -n1 | awk '{print $NF}')
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[ "$first" = /usr/bin/editor ] && [ -e "$last" ] && [ ! -L "$last" ] &&
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[ "$(readlink -f "$last")" = "$(readlink -f /usr/bin/editor)" ] &&
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grep -q /etc/alternatives/editor /root/lab-answers/5
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}
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task 1 "A hard link and a symlink, the original deleted"
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need "original.txt is deleted" '[ ! -e $D/original.txt ] && [ ! -L $D/original.txt ]'
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need "hard.txt still has the text" '[ -f $D/hard.txt ] && [ ! -L $D/hard.txt ] && [ -s $D/hard.txt ]'
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need "soft.txt is a symlink to original.txt, now dangling" '[ -L $D/soft.txt ] && [ "$(basename "$(readlink $D/soft.txt)")" = original.txt ] && [ ! -e $D/soft.txt ]'
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task 2 "The two hard-link errors"
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need "/root/lab-answers/2 has the cross-device error" 'grep -qi "cross-device" /root/lab-answers/2'
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need "and the one about directories" 'grep -qi "directory" /root/lab-answers/2'
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task 3 "Link counts of a directory"
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need "parent has two subdirectories" '[ "$(find $D/parent -mindepth 1 -maxdepth 1 -type d | wc -l)" -eq 2 ]'
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need "/root/lab-answers/3 has 2, then 4" '[ "$(sed -n 1p /root/lab-answers/3 | tr -dc 0-9)" = 2 ] && [ "$(sed -n 2p /root/lab-answers/3 | tr -dc 0-9)" = 4 ]'
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task 4 "current switched to 1.1 with ln -sf, then ln -sfn"
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need "releases/1.0 and releases/1.1 are directories" '[ -d $D/releases/1.0 ] && [ ! -L $D/releases/1.0 ] && [ -d $D/releases/1.1 ] && [ ! -L $D/releases/1.1 ]'
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need "ln -sf left a 1.1 link inside releases/1.0" '[ -L $D/releases/1.0/1.1 ]'
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need "current points to 1.1" current_ok
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task 5 "/usr/bin/editor followed to the real program" debian
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need "/root/lab-answers/5 starts at /usr/bin/editor, goes through /etc/alternatives/editor and ends at the real program" chain_ok
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